Filter



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Patented Deo. 24, 1895.

'wffz W. H. COX.

FILTER.

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ANDREW AGRAHAMJHOTOUTnQwASmN Imm. D c

(No Model.)

W/TNESSES.'

UNITED STATES i PATENT OEEICE.

TILLIAM H. COX, OF CYNTHIANA, KENTUCKY.

FILTER.

SPECIFICATION forming part of Letters Patent No. 552,041, dated December24, 1895.

Application led April 2, 1895. Serial No. 544,161. (No model.)

To @ZZ whom it nay concern.-

Beit known that I, VILLIAM H. COX, of Oynthiana, in the county ofHarrison and State of Kentucky, have invented a new and Improved Filter,of which the following is a specification.

My invention is an improvement in the class of cistern-fllters having anautomatic valve attachment for regulating the course of liow anddischarge of water.

The construction, arrangement, and operation of parts are as hereinafterdescribed, and illustrated in accompanying drawings, in which- Figure lis a central vertical section of my improved filter, and Fig. 2 is across-section of the same on line 2 2 of Fig. l. Fig. 3 is a sectionalview showing a modification.

The body or casing of the filter is cylindrical in form, and preferablyIconstructed of sheet metal. Within the casing are arranged threeparallel vertical tubes A B C, the tube A being the inlet and projectingthrough the top of the casing, the tube C being the outlet andprojecting through the bottom of said casing, while the tube B isarranged between the others A C and provided with a transverse partitionor diaphragm b, so that it may serve as a conductor for both unfilteredand partly-filtered water, as will be further eX- plained. The portionof such conductor B above said diaphragm b is connected with theinlet-tube A by a transverse tube D, and the portion below suchdiaphragm is connected with the outlet-tube C by a similar tube E. Itwill be apparent that water entering tube A may pass through D into theupper portion of conductor B and, passing over the top of the same,descend to the bottom of the casing, thence ascend in the lower part ofconductor B through the transverse tube E into the outlet C. In thiscourse the water is strained and filtered, as will be now explained.

A portion ofthe inlet-tube A above the connecting-tube D consists of acylindrical wire-gauze strainer F, which is soldered to the otherimperforate sections of said tube. The operation of this strainer willbe further referred to hereinafter. The lower portion ofthefllter-casing is occupied mainly by a ltering material, such aspulverized chara coal X, and the lower portion of the outlettube C isalso filled with the same, as shown. This material Xis supported uponhorizontal wire screens G and H. The larger screen G is arranged a fewinches above the bottom of the casing and the central conductor Bprojects through it. The casing` is provided with a false or secondbottom I, vwhich is made concave, ,as shown, to allow drainage to thecenter, where there is an opening provided with a conical bushing J thatserves as a seat for a conical valve K. The latter is fixed on aslidable rod L, which projects through the diaphragm b of conductor Band carries a float M formed of wood or some other material which islighter than water. A wire screen or diaphragm d is arranged in the tubeD for the purpose of preventing leaves, twigs, straw, &c. from enteringthe body of the iilter.

It will be seen that water entering and lling A D B above the diaphragmb will raise the float M to the position shown by dotted lines, Fig. l,and thereby seat the valve K so that the outlet J is closed at thatpoint. Then the water overliowin g from the upper mouth' of conductor B(see dotted arrows) will percolate the body of charcoal X and enter thespace or chamber between the screen G and false bottom I, whence itpasses up through the lower portion of the same conductor B and throughlateral tube E down through the filtering material X in outlet-tube O,whence it escapes into a cistern or other receptacle. (Not shown.) Inthis operation the water is strained, then filtered, and refiltered. Asa means for further filtration than is provided for by the charcoal X, Ipropose to employ a sponge Y, which is placed in outlet-tube C upon thebody of charcoal X therein. The charcoal may be inserted and removedthrough the top of the casing, which is provided with a hinged lid orcover N, and the sponge Y may be inserted and removed for cleaning it byopening such cover N and the cover O of tube C, as will be readilyunderstood.

When the flow of water into the lter ceases the siphonic action of theoutlet-tube C will draw the water-level in the body of the iilter downto a line parallel with the lower side of connecting-tube E, and thewater in inlet- IOO tube A and its connections D B will be drawn off byreason of the escape provided by openings cv and d in tubes A D. Theseopenings allow passage into the body of charcoal, as

shown.

When the water is drawn off from tubes A D B, there being no support forthe float M, it falls and opens valve K, so that all the water remainingin the charcoal and chamber below it is drawn off. Thus no water remainsin the lter to become stagnant in the warmer season or frozen in thecolder one.

The course of the water when there is a large quantity received into theiilter is indicated by dotted arrows, and the course of water escapingafterward is shown by full lines.

In case water enters tube A faster than it can pass through the iilterproper, it will overiiow through screen F into the body of the easing,being strained in such passage so that leaves, sticks, twigs, straw,dac., will be retained in tube A.

The lower or pocket end of inlet-tiibe A projects laterally through theside of the casing and is provided with a tightly-fitting cap l toprovide for oonveiiient removal of mud or other sediment that maycollect in the pocket and also of such materials as have been strainedout by the screen d.

Referring to Fig. 3, it is apparent if the conductor B should be placednear the side of the casing a lever connection maybe made, as at Q,between the float rod and valve, so that the latter will close and open,as in the preferred arrangement before described.

What I claim isl. The combination, with a iilter casing, having anopening in its lower end, and filtering material held therein, of aninlet tube, outlet tube, an intermediate conductor, and lateral tubularconnections between .them as specified, of avalve attachment consistingof a float, rod, and valve proper, arranged to operate substantially asshown and described.

2. The combination, with the lter having an opening in its lower end,three vertical tubes; to-wit, the inlet, outlet, and intermediateconductor, and lateral tubular connections, tlie said conductor having atransverse diaphragm arranged between the lateral connections, a iioatand valve attachment for regula ting the course and discharge of waterthrough and from the filter, and a ltering material arranged in the bodyof the filter and in the outlet tube, as shown and described.v

3. The combination, with the easing having an outlet in its lower end,three vertical tubes, and lateral tubular connections therefor, atransverse diaphragm in the central tube, a float arranged above thediaphragm, the iioatcarrying rod sliding through the latter, a valve onthe lower end of said rod, a body of filtering material and screensupporting it above the bottom of the filter, and another body ofiiltering material supported upon a screen in the outlet tube, all asshown and described, to operate as specified.

4. The combination, with the casing, having an opening in its lower end,of three parallel tubes, and tubular lateral connections between them, afloat and valve attachment for opening or closing the aforesaid opening,filtering material arranged as specified, a transverse diaphragm in thecentral tube Or conductor, which is arranged between said lateralconnections, and an opening or water-escape in the lower side of theconnection between the inlet tube and such central conductor, as and forthe purpose speciiied.

WILLIAM H. COX. lVitnesses F. M. COX, C. ll. COX.

